It’s been 80ish bytes in Bitcoin Core since 2014, which Luke at least acknowledged—even if it had been 40ish bytes in Knots then and has been ever since. Given that more than 99% of listening nodes are running Bitcoin Core, I don’t think it’s much of a debate that the current broadly accepted datacarriersize value would be Bitcoin Core’s default value. I don’t think it’s a good use of our time to engage with Luke’s unique perspective on this one.